|Publication number||US7640311 B2|
|Application number||US 11/395,798|
|Publication date||Dec 29, 2009|
|Filing date||Mar 31, 2006|
|Priority date||Mar 31, 2006|
|Also published as||CA2544699A1, CA2544699C, US8117269, US8352565, US8499054, US20070233792, US20100064019, US20120158874, US20130091233|
|Publication number||11395798, 395798, US 7640311 B2, US 7640311B2, US-B2-7640311, US7640311 B2, US7640311B2|
|Inventors||Olav A. Sylthe, Dan Dumitru, Eshwar Stalin, Andrew Bocking|
|Original Assignee||Research In Motion Limited|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (12), Non-Patent Citations (1), Referenced by (8), Classifications (8), Legal Events (7)|
|External Links: USPTO, USPTO Assignment, Espacenet|
The present embodiment relates to a method for viewing attachments on a portable electronic device, in particular, attachments having non-image formats.
Wireless technology has made it possible for email messages to be received and displayed by various portable electronic devices including Personal Digital Assistants (PDAs), for example. Sending email messages including attachments, such as photographs or scanned documents, is becoming increasingly popular, however, most attachments are formatted for a rich desktop or printer experience and generally require a desktop PC with a large screen display for proper viewing. As such, viewing these attachments on the small screens of most portable electronic devices presents a challenge.
In addition, attachments are often created using proprietary formats such as Microsoft Office™ or Adobe Acrobat™, for example. In order to accommodate these and other proprietary formats, some portable electronic devices now include client versions of the original document creation applications, such as Pocket Word™ and Pocket Excel™, for example. These mobile versions of original applications tax device resources including memory and storage space and therefore do not provide an ideal solution.
The embodiment will be better understood with reference to the following Figures in which like numerals denote like parts and in which:
It will be appreciated that the portable electronic device 12 is movable within the coverage area and can be moved to coverage areas defined by other base stations. Further, as will be understood by one of ordinary skill in the art, wireless networks include GSM/GPRS, CDPD, TDMA, iDEN Mobitex, DataTAC networks, EDGE or UMTS and broadband networks such as Bluetooth and variants of 802.11.
A server 18 handles wireless client requests from the portable electronic device 12. A firewall, or proxy server, 16, is provided between the server 18 and the Internet 14. The server 18 further operates as an attachment server, which communicates with an email client and an attachment viewer of the portable electronic device 12 to allow a user to view attachments that are received in email messages. While only one server 18 is shown for illustration purposes, a person skilled in the art will understand that the attachment server may alternatively be a separate server.
Referring now to
The portable electronic device 12 is based on a microcomputer including a processor 20 connected to a read-only-memory (ROM) 22 that contains a plurality of applications executable by the processor 20 that enables each portable electronic device 12 to perform certain functions including, for example, PIN message functions, SMS message functions and cellular telephone functions. The processor 20 is also connected to a random access memory unit (RAM) 24 and a persistent storage device 26 which are responsible for various non-volatile storage functions of the portable electronic device 12. The processor 20 receives input from various input devices including a keypad 28. The processor 20 outputs to various output devices including an LCD display 30. A microphone 32 and phone speaker 34 are connected to the processor 20 for cellular telephone functions. The processor 20 is also connected to a modem and radio device 36. The modem and radio device 36 is used to connect to wireless networks and transmit and receive voice and data communications through an antenna 38. A content store 40, which is generally a file storage system for the portable electronic device 12, is also provided.
When the attachment server receives a request from the attachment viewer of the portable electronic device 12 to view an attachment that was received with an email message, the attachment server first builds a Document Object Model (DOM) by parsing the attachment document (step 42). In this manner, a graph structure is built within the server representing a map of the original image. The DOM contains textual content, font, style and formatting attributes as well as layout attributes, such as page/slide size, positioning information (i.e. x, y and z coordinates on the page/slide), embedded graphics and tables, for example. DOM structure is disclosed in United States Patent Application No. 2006/0055693, which is herein incorporated by reference. The attachment server further creates a server descriptor, which is generally an initial response from the attachment server and includes a list of renderable DOM identifiers. The renderable DOM identifiers are unique identifiers that represent each page in a renderable document attachment. After building the DOM, the attachment server sends the response including the renderable DOM identifiers to the portable electronic device 12.
Upon receiving the response from the attachment server, the attachment viewer issues a “render” command including the particular DOM id to render, as indicated at step 44. The attachment server then invokes a Rendering Decorator, which is a component of the attachment server that executes the rendering logic, to process the command (step 46). At step 48, the rendering decorator first checks in-memory document DOM cache of the attachment server to determine if the arbitrary DOM id has already been rendered. If the DOM id has already been rendered, the attachment server returns the rendered attachment to the attachment viewer, in a manner that will be described further below, as indicated at step 66.
If the DOM id has not been previously rendered, the Rendering Decorator traverses the attachment document DOM structure (step 50) and checks each command DOM id against the requested DOM id to render (step 52). When the matching DOM id is found, the rendering process is started and a rendering library is initialized, as indicated at step 54. At steps 56 and 58, individual commands of the page are traversed and appropriate rendering commands are issued to the rendering library based on the command type. Command types include: vector, image, paragraph and text segment, for example. The rendering library draws all of the rendering requests on a Handle to Device Context (HDC) associated bitmap. The HDC associated bitmap is also referred to as an off-screen bitmap because it is created in memory by the attachment server.
Once all of the commands of the page are rendered, which is checked at step 60, the contents of the rendering library are saved to a JPEG file and the rendering library is de-initialized, as indicated at step 62. An image component is then built from the JPEG file and is added as an attribute to the Rendering Decorator result, at step 64. At step 66, the JPEG file of the rendered attachment is encapsulated in Universal Content Stream (UCS) format and sent to the attachment viewer of the portable electronic device 12 where the UCS data is saved in the content store 40 and the JPEG is then shown on the display 30.
Referring now to
The attachment viewer then determines whether or not the attachment format is renderable at step 70. For text attachments, rendering is not supported. For non-renderable formats, the attachment viewer builds an attachment request protocol command string for a default request, as indicated at step 72. If the attachment format is renderable, the attachment viewer builds an attachment request protocol command string for rendering with renderable DOM identifiers included, as indicated at step 74. At step 76, the attachment viewer issues the Extensible Markup Language (XML) conversion request that was constructed in step 72 or step 74.
At step 78, the attachment viewer determines if the attachment conversion was successful. If unsuccessful, an error message based upon returned error code from the attachment server is displayed on the display 30 of the portable electronic device 12 and the logic is terminated, as indicated at steps 80 and 88, respectively.
If the conversion is successful, the attachment viewer parses the UCS data that was returned from the attachment server to search for renderable DOM identifiers, at step 82. If no renderable DOM identifiers are present, the converted attachment is displayed in the attachment viewer on the display 30 of the portable electronic device 12 without rendered images, as indicated at step 84. If renderable DOM identifiers are present, the attachment viewer displays the attachment with a rendered image, which is retrieved from the content store 40, for each requested page/slide shown in-line with textual content of the attachment, as indicated at step 86. In both steps 84 and 86, once all of the requested UCS data has been displayed, the logic is terminated at step 88.
Operation of the present embodiment is described with reference to
Three different views are available for the PPT attachments. In addition to the default “View Both” option, which is shown in
In the “View Both” and the “View Slides” views, the slide thumbnails 90 are highlighted when selected using a track wheel of the portable electronic device 12. When a the thumbnail is selected, the user may invoke the “View” command, as shown in
A “Slide Show” command is also provided on pull down menu 96 and may be selected as shown in
A specific embodiment has been shown and described herein. However, modifications and variations may occur to those skilled in the art. For example, although the portable electronic device 12 has been described having cellular telephone capabilities, the described embodiment is not limited to portable electronic devices having both cellular telephone and email capabilities. A portable electronic device having email capabilities but not cellular telephone capabilities may also be used. All such modifications and variations are believed to be within the sphere and scope of the present embodiment.
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|Citing Patent||Filing date||Publication date||Applicant||Title|
|US7812852 *||Oct 31, 2006||Oct 12, 2010||Research In Motion Limited||Method and system for zoomable attachment handling on a portable electronic device|
|US8018473||Aug 30, 2010||Sep 13, 2011||Research In Motion Limited||Method and system for zoomable attachment handling on a portable electronic device|
|US8352565||Jan 11, 2012||Jan 8, 2013||Research In Motion Limited||Method for viewing non-image attachments on a portable electronic device|
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|U.S. Classification||709/206, 715/746|
|International Classification||G06F15/16, G06F3/00|
|Cooperative Classification||G06T2200/16, G06F15/16, G06T15/005, G06Q10/107|
|Mar 31, 2006||AS||Assignment|
Owner name: ARIZAN CORPORATION, GEORGIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SYLTHE, OLAV A.;DUMITRU, DAN;STALIN, ESHWAR;REEL/FRAME:017757/0399
Effective date: 20060329
Owner name: RESEARCH IN MOTION LIMITED, CANADA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BOCKING, ANDREW;REEL/FRAME:017757/0393
Effective date: 20060330
|Nov 16, 2009||AS||Assignment|
Owner name: RESEARCH IN MOTION LIMITED, CANADA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:ARIZAN CORPORATION;REEL/FRAME:023523/0573
Effective date: 20020703
|Nov 9, 2010||CC||Certificate of correction|
|Aug 23, 2011||CC||Certificate of correction|
|Mar 12, 2013||FPAY||Fee payment|
Year of fee payment: 4
|Feb 18, 2014||CC||Certificate of correction|
|Nov 3, 2014||AS||Assignment|
Owner name: BLACKBERRY LIMITED, ONTARIO
Free format text: CHANGE OF NAME;ASSIGNOR:RESEARCH IN MOTION LIMITED;REEL/FRAME:034143/0567
Effective date: 20130709